CVE-2021-41104

ESPHome is a system to control the ESP8266/ESP32. Anyone with web_server enabled and HTTP basic auth configured on version 2021.9.1 or older is vulnerable to an issue in which `web_server` allows over-the-air (OTA) updates without checking user defined basic auth username & password. This issue is patched in version 2021.9.2. As a workaround, one may disable or remove `web_server`.

CVSS v3 7.5 HIGH
CVSS v2.0 4.3 MEDIUM

7.5^/10

CVSS v3 : HIGH

Vector :

Exploitability : 3.9 / Impact : 3.6

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact HIGH

Availability Impact NONE

Scope UNCHANGED

4.3^/10

CVSS v2.0 : MEDIUM

Vector : AV:N/AC:M/Au:N/C:N/I:P/A:N

Exploitability : 8.6 / Impact : 2.9

Access Vector NETWORK

Access Complexity MEDIUM

Authentication NONE

Confidentiality Impact NONE

Integrity Impact PARTIAL

Availability Impact NONE

References

Link	Resource
https://github.com/esphome/esphome/pull/2409/commits/207cde1667d8c799a197b78ca8a5a14de8d5ca1e	Patch Third Party Advisory
https://github.com/esphome/esphome/releases/tag/2021.9.2	Release Notes Third Party Advisory
https://github.com/esphome/esphome/security/advisories/GHSA-48mj-p7x2-5jfm	Patch Third Party Advisory

Configurations

Configuration 1 (hide)

AND

cpe:2.3:o:esphome:esphome_firmware:*:*:*:*:*:*:*:*

OR	cpe:2.3:h:espressif:esp32:-:::::::*
	cpe:2.3:h:espressif:esp8266:-:::::::*

History

No history.

Information

Published : 2021-09-28 16:15

Updated : 2024-02-28 18:48

NVD link : CVE-2021-41104

Mitre link : CVE-2021-41104

CVE.ORG link : CVE-2021-41104

JSON object : View

Products Affected

espressif

esp8266
esp32

esphome

esphome_firmware

CWE

CWE-306

Missing Authentication for Critical Function

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